Electronic book



FIG. 1 is a front elevational view of an electronic book showing my new design;

FIGS. 2 and 3 are right and left side elevational views thereof, respectively;

FIGS. 4 and 5 are top and bottom plan views thereof, respectively; and,

FIG. 6 is an isometric view thereof in a position of use. 

The ornamental design for an electronic book, as shown. 